66201725140984 has 16 divisors (see below), whose sum is σ = 124423076058120. Its totient is φ = 33022238192160.

The previous prime is 66201725140913. The next prime is 66201725141033. The reversal of 66201725140984 is 48904152710266.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9828043714 + ... + 9828050449.

Almost surely, 2^{66201725140984} is an apocalyptic number.

It is an amenable number.

66201725140984 is a deficient number, since it is larger than the sum of its proper divisors (58221350917136).

66201725140984 is a wasteful number, since it uses less digits than its factorization.

66201725140984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19656094590 (or 19656094586 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 66201725140984 in words is "sixty-six trillion, two hundred one billion, seven hundred twenty-five million, one hundred forty thousand, nine hundred eighty-four".